Puzzle 1

Improve, or change for a better model

Coin-operated games are found in these places

Be sure of something

Someone who posts junk messages online

Wooden furniture with doors

Dad's dad

Using the voice to produce musical tones

Breathes in

You're either with us, or __ us

Orange squash for carving

Jumper, pullover

Coastal algae such as bladderwrack

Principal __, head teacher in School of Rock

Christmassy